You can use any kinda of tin can, anyways is handy because you flip the sanding paper in the can, and you don't have to glue it on a scrap 2x4, or hold it with you hand. I don't know if you get it, but that was the all point of it!

I get it. not saying your idea wasn't good. I think this is very clever especially the way you can quickly change out the paper. I just mean the way people make survival tins and use these cans for things just to get publicity for using an altoids tin. yours has a purpose and I get it. didn't mean to dis your ible.